1 Peter 5:8 (NIV)
8 Be alert and of sober mind. Your enemy the devil prowls around like a roaring lion looking for someone to devour.

Here the apostle does three things:-
He shows them their danger from an enemy more cruel and restless than even the worst of men, whom he describes, 1. By his characters and names. (1.) He is an adversary: "That adversary of yours; not a common adversary, but an enemy that impleads you, and litigates against you in your grand depending cause, and aims at your very souls.' (2.) The devil, the grand accuser of all the brethren; this title is derived from a word which signifies to strike through, or to stab. He would strike malignity into our natures and poison into our souls. If he could have struck these people with passion and murmuring in their sufferings, perhaps he might have drawn them to apostasy and ruin. (3.) He is a roaring lion, hungry, fierce, strong, and cruel, the fierce and greedy pursuer of souls. 2. By his business: He walks about, seeking whom he may devour; his whole design is to devour and destroy souls. To this end he is unwearied and restless in his malicious endeavours; for he always, night and day, goes about studying and contriving whom he may ensnare to their eternal ruin.

Rich Mullins, a Christian musician and songwriter who died in 1997 at the age of 41, once confessed in a concert that he struggled with watching pornography while traveling alone. One of his spiritual mentors told him, "It's not that you're so bad, it's just that you're not supposed to go out by yourself." So Mullins took a friend along with him on a trip to Amsterdam near its famous red-light district. Mullins said he was hoping his friend would fall fast asleep and start snoring so, as Mullins put it, "I thought, 'Maybe it would be fun to just take a walk and be tempted.'" He waited until 5:00 in the morning for his friend to start snoring, but he never did. Meanwhile, in the midst of his temptation, Mullins picked up a notebook and wrote the words to one of his more popular songs, 'Hold Me, Jesus'":

And I wake up in the night and feel the dark
It's so hot inside my soul
I swear there must be blisters on my heart
So hold me Jesus, 'cause I'm shaking like a leaf
You have been King of my glory
Won't You be my Prince of Peace"

With this back story, some people call this Mullins' "Prayer for Porn Addicts" song, but it could also be a called a "Prayer for Anyone Who Is Tempted" Song.

[Luke Gilkerson, "'Hold Me Jesus': A Prayer for Porn Addiction," Covenant Eyes, June 17, 2010.]

Satan tempts us with things our nature desires and then accuses us in front of God of our failures.